Microsoft ADO.NET Data Services enables the creation of REST-based data services that can expose data from any source and be consumed by rich internet applications. It provides libraries and client components to quickly build data services that present data using a uniform URI syntax and standard HTTP operations. These data services can then power interactive experiences when combined with technologies like AJAX and Silverlight.

1. The Microsoft® ADO.NET Data Services framework provides a first-class infrastructure for the next wave of dynamic internet applications by enabling Web applications to expose data as REST-based data services that can be consumed by client applications in corporate networks and across the internet.<br />http://msdn.microsoft.com/en-us/data/bb931106.aspx<br />TOP NEW FEATURES<br />Publish data services that can be consumed by rich internet applications (RIA) through a simple, uniform URI syntax<br />Use Web technologies such as AJAX and Microsoft Silverlight to consume data services in highly interactive applications<br />Build data services solutions quickly by using a comprehensive set of Microsoft .NET libraries and client components.<br />SIMPLE AND WEB-FRIENDLY<br />Build rich Internet applications (RIA), separating data from presentation, by using Web technologies to easily and effectively create data services.<br />Build data services for the Web<br />Build solutions that publish and consume data services using URIs to address data. Perform data operations using standard HTTP verbs such as GET, POST, PUT, and DELETE and leverage rich application services such as sorting, filtering, and paging. <br />ADO.NET Data Services<br />Use a stateless, REST-style application architecture and standard Web infrastructure for caching and authentication.<br />Simplify data services development<br />Build data services quickly and easily using a comprehensive set of Microsoft .NET Framework libraries. Take advantage of a pluggable data provider layer that enables any data source to be exposed as a data service. Build secure data services using a flexible authorization model.<br />Add powerful data services to rich Internet applications<br />Combine the power of Microsoft ADO.NET Data Services with existing Web development technologies such as AJAX and Microsoft Silverlight to build rich Internet applications that integrate data services into a highly interactive user experience. Present a natural, object-based programming model for your data services, based on a minimum footprint .NET Framework and Silverlight client library. <br />Take advantage of support for:<br />Identity Resolution and Association traversal<br />Microsoft Language Integrated Query (LINQ)<br />Synchronous and asynchronous data operations<br />Create ASP.NET solutions using ADO.NET Data Services by using: <br />A new ASP.NET AJAX library<br />ASP.NET data source controls that enable data binding to a data service<br />FORMAT AND STORAGE-INDEPENDENT<br />Represent data in any store as data services, using simple open formats.<br />Expose Data as a Service<br />Build data services for relational data sources, such as Microsoft SQL Server®, MySQL, DB2, and Oracle, using the built-in support for the ADO.NET Entity Framework. Expose data services using any data store using the pluggable provider model based on LINQ interfaces.<br />Present a Conceptual View of Data <br />Translate HTTP requests for data entities identified by URIs to the appropriate executable expressions for the underlying data store. Abstract the data source to provide generic data services that can be used by any client application.<br />Deliver Data in Well-Known Formats<br />Take advantage of support for a range of data formats, such as:<br />JSON<br />ATOM/APP<br />Build data services that can provide data in the most appropriate format for the technology used to develop the client applications.<br />UNIFORM URI SYNTAX<br />Identify data entities with a URI and use standard HTTP verbs to operate on the resource.<br />Identify Data Entities using Simple URIs <br />Build client applications that access data entities through uniform URI syntax.<br />All customers in the data storehttp://server/dataservice.svc/CustomersThe customer identified by the key ‘1’http://server/dataservice.svc/Customers(1)All the orders made by customer number 1http://server/dataservice.svc/Customers(1)/Orders<br />Uniform URI Syntax<br />Use a Flexible Addressing Scheme to Perform Data Operations <br />Perform advanced data operations such as sorting and paging, and execute data service-specific operations such as validation and business logic simply by specifying URI parameters.<br />The 3rd and 4th Order (when sorted by Order ID) for Customer #1Customers(1)/Orders?$orderby=ID&$top=2&$skip=2The GetOrders method with the month parameter value 11, and the results sorted by CustomerNameGetOrders?month=11&$orderby=CustomerName<br />Perform data operations using URI syntax.<br />